I have modified and resized the original designs ad shared the files I've changed. The sight is for a recurve bow unfortunately I have not been able to attach it yet as the threads are clearly not metric so I will have to get the appropriate bolts and will then check the size.I have only published the parts I've modified please download the original design for additional parts. The screws required are m4 size threads for the sight adjustment. around 160mm for vertical and 60mm for horizontal should be sufficient. I printed it with a 26% infill and with a 2mm shell so the X beams are just about solid.I also cut 2mm off the bottom when printing in with cura and its strong enough but I left it thick so you can decide. Print time with above settings and at 50mm/s 0.25mm LH was about 4 hours. I used a M5 threaded rod for the larger screw as I couldn't find M3 in the required length the bottom nut is a nylock nut to keep it inplace at the top I have a standard nut and a wingnut adjusted to remove all slack and then tightened together, the adjustment is smooth actually much better than I anticipated.